In a right triangle, if one of the angles is 35°, what are the measures of the other two angles?
A. 45° and 45°
B. 45° and 90°
C. 55° and 35°
D. 55° and 90°

Question

In a right triangle, if one of the angles is 35°, what are the measures of the other two angles?
A. 45° and 45°
B. 45° and 90°
C. 55° and 35°
D. 55° and 90°

anonymous · Answer

Remember that by definition, a right triangle has a right angle, so this eliminates A and C because they don't have a right angle (A right angle is 90 degrees).

Now, we know two angles. What do we know about the sum of the angles in a triangle?